How we find the cause.
We work out where the blockage sits before we touch it: in a fixture trap, in a branch line, or in the main drain running to the sewer. Which fixtures are affected tells us most of that before anyone lifts a grate. From there it is a drain machine, high-pressure jetting or a camera, depending on the pipe and the access, and we tell you which one we are using and why.
Clearing a blockage and fixing the reason for it are two different jobs, and you should know which one you are paying for. Grease responds to jetting. Roots come back unless the joint they entered through is repaired. A cracked or sagging pipe keeps catching everything that passes. If a drain has blocked twice, a camera inspection costs less than clearing it a third time.
What this means in Blackstone
The drains under most Blackstone homes are earthenware clay, laid long before PVC, with cement or rubber-ring joints. Roots find those joints, and ground movement leaves a lip at them that catches paper and grease until the line closes over. That is why the same drain blocks again six months after it was cleared: the clearing worked, but nothing was done about the joint letting the roots in.
Blackstone has a coal-mining history, and ground movement above old workings has affected properties here over the years. When a drain blocks at the same spot every time, a displaced joint or a change in the pipe's fall is one of the first things worth ruling out, because no amount of clearing will fix either.
Some of the oldest drains in Ipswich, plus ground that has moved above former mine workings, which can leave sewer joints displaced. 97% of occupied homes in Blackstone are separate houses, so the drainage and stormwater on your block are almost certainly yours to maintain up to the connection point.
Historic underground coal workings lie beneath parts of Blackstone. The Queensland Government’s abandoned mines program publishes information about former mine areas and any remediation work. Queensland Government: abandoned mines ↗
What to send us
Note which fixtures are affected and when it started. Stop using anything that is backing up, and keep children and pets away from an overflow. Tell us if the drain has been cleared before, and whether anyone left you a report or footage. It saves you paying twice for the same information.
What actually moves the price
Four things move the price: how we get into the drain, where the blockage sits, the condition of the pipe, and whether a camera is needed to see the cause. We set out what the work covers before we start, so you know whether you are paying to clear a drain or to find out why it blocked.
Sources: ABS 2021 Census QuickStats: Blackstone · Queensland Government abandoned mines information. Distances are straight-line from Redbank Plains. Housing descriptions are general observations, not a survey of any individual property.